Astronomy and Astrophysics Forum

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Join in expert discussion on the topics of Astronomy and astrophysics. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
High School Are Planetary Orbits in the Solar System Flat or 3D?
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Graduate Is dark matter distribution clumpy or homogenous?
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High School Map the Sky: Charting Stars & Planets Pencil & Paper Style
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Graduate Can You Answer These Four Conceptual Questions About Black Holes?
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Is the Estimated Value of Precious Metals on Asteroid Accurate?
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Undergrad How Do Gas Giants Retain Massive Atmospheres?
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High School What are the factors that affect the speed of light?
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Graduate Could Stellar Black Holes Account for Half of Dark Matter in the Universe?
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Undergrad Earth-Moon System Without Sun: Effects Explored
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Graduate Do all measurements need to be normalised?
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Stargazing Explorer 130 or Astromaster 130EQ for camping?
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Graduate Bode's Law (Or better attributed as Titius' Rule)
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Graduate Cosmic Microwave Background Radiation: A Homogeneous and Isotropic Universe
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Undergrad Proxima centauri main sequence duration
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Stargazing OECSYAZ2D114/F900 Telescope Help.
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Undergrad Movement of different-sized crafts in space
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Undergrad Can Wormholes and Dark Matter Lead to Time Travel?
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Graduate What Is the Significance of the Frost Line in the Asteroid Belt?
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Graduate What is the Universe Expanding Into Beyond the Big Bang?
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Graduate Routes to formation of a black hole?
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Undergrad Planets' and Sun's mean angular velocity
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Undergrad How Do Scientists Estimate the Distance to Stars?
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High School Why are there two tides a day when there is only one moon?
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Undergrad Something I don't get about Wormholes
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Graduate Accepted (precise) value for lunar L2 point?
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Do moons always get more attention than the gas giant planets they orbit?
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Undergrad The time of becoming a red giant
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Graduate Earth-Moon vs Earth-Sun Lagrangian Point system
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Stargazing How to estimate distance by a telescope
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Graduate Empirical establishing of Mass-Radius relation for stars
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Graduate Could Dust Be Responsible for the Pioneer Anomaly?
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Graduate Determination of spin-parity of Hoyle state
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The Symbology of 2001, a space idiocy.
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Graduate Can a Supernova Core Reignite as a Smaller Star?
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Graduate What Defines the Fabric of Time in Space?
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High School Why Do Stars Appear Blue to the Naked Eye but Red in Scientific Images?
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Graduate Can We Ever See the Big Bang?
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Undergrad Question, Why is Mars almost sterile?
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High School Oort cloud bodies and prevalence
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Undergrad Simulations - Programming languages?
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Graduate Gravitational Lense - Focal Point & Mass-Radius Formula
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Graduate What Explains the Helium-4 Abundance Beyond Stellar Nucleosynthesis?
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Graduate How Long Does It Take for a Comet to Evaporate in the Oort Cloud?
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Undergrad Initial mass function - power law
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Galaxies & Masses: Find a List or Table Here
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Graduate Why Aren't Galaxies Skewed Despite Vast Distances in Light Travel?
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Undergrad Why do astronomers stick with old languages like IDL and FORTRAN?
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Undergrad Composition of planets vs. moons
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Stargazing Witness a Rare Celestial Event: Total Solar and Lunar Eclipses
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Undergrad Breaching Europas Subsurface Ocean
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Cyclic Forces in the Solar System & Zodiac
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Would you book online a travel to outer space?
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Undergrad Astronomy Problem: How to Find Apparent and Absolute Magnitude of a Cepheid
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Can we see the image of earth coming back to us after space travel
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Undergrad Why do Planets have elliptical orbits ,AND
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Undergrad What Are the Key Differences Between Black Holes and Wormholes?
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Undergrad Dark Energy & Expanding Universe: Newtonian Perspective
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High School Does the Earth get bigger from the sun?
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Undergrad What are the best RSS feeds for the latest astrophysics research?
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Undergrad Calculate Orbital Period of Earth: GM & a for t in Years
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Graduate What are the Names of the Points on a Space Elevator's Path?
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Stargazing How Does Atmospheric Turbulence Affect Lunar Eclipse Shots?
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High School Some very basic Astronomy questions
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Graduate Empirical measurement of the expansion of the universe
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Graduate Is Quantum Astrophysics a Subfield of Astrophysics?
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Undergrad Is Time Affected by Space in the Universe?
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Stargazing Rare Total Lunar Eclipse on Winter Solstice - Dec 21 @12:29AM EST
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Graduate Maximum redshift - can it move light off the scale?
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Graduate Detecting Dark Matter with Germanium Atoms
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Undergrad Number of intelligent civilizations over the history of the galaxy
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Undergrad The Space Tent: A Revolutionary Idea for Structuring Martian Towns
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High School What is a Morton Wave on the Sun?
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Graduate What would happen if two black holes collided?
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Undergrad What Happens When We Cool and Slow Down Solar Particles?
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Undergrad Is space an insulator? Why do satellites stay warm?
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Undergrad Blocks of empty space within the known universe
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Undergrad Trajectory of object around the moon as function of time
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Graduate Pulsar Timing Accuracy: Fractional Instability to 10^-15
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High School Understanding Moon Phases: Examples & Visualization
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Stargazing Best compromise for portable telescope?
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Graduate Force on a Swinging Rod (space elevator)
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Graduate Could the inflation epoch carry information faster than c
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Undergrad How to test a parabolic mirror?
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Graduate Can Hawking Radiation explain the immortality of neutron stars?
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Graduate Faster than light and way smaller than electrons
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Graduate Please explain the paths that planets take in regards to spacetime.
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Graduate Movement of Galaxies in relation to each other
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Undergrad Is Time Travel Possible Through Black Holes?
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Graduate Is Time Really a Fourth Dimension Similar to Spatial Dimensions?
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Graduate Frame dragging around a rotating black hole.
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Undergrad A question about expansion of the universe
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Graduate How can matter change the geometry of spacetime?
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Undergrad How Did Kepler Discover the Sun's Position in Planetary Orbits?
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Graduate Is the Entropy of Black Holes Proportional to Their Size?
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Undergrad How can we see stars past 13.5 billion light years away?
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Undergrad What exactly are Magnetars? I've heard the term used before, and all I
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Graduate Existence of super-massive black holes
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Undergrad Is There a Center of the Universe? The Mystery of Tracing Its Boundaries
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Undergrad Nobody has yet seen an extraterrestrial, but scientists have found
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Undergrad Quick question: Why is Saturns atmosphere LESS stormy than Jupiters?
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